Grader blade



A. ANDERSON AND C. O. WOLD.

GRADER BLADE.

APPLICATION FILED NOV. 14. 1911.

/NVENTORS x AXEL ANDERSON ,W 4 WM CARL o. WOLD.

WITNESSES! I B urineosmrssfium OFFICE} mu mnnnsom or sr. 29mm, AND cam. 0. worm, or MINNEAPOLIS, museum's;

ASBIGNOBS '10. RUSSELL GRADER MANUFACTURING 00., OF MINNEAPOLIS, MINNE- SOTA, A CORPORATI ON GRADER BLADE.

Application filed November 14, 1917. Serial No. 201,956.

T all whom it concern.

Be it known that we, AxnL ANDERSON and CARL 0. Worn citizens of the United States, residents of t. Paul, county of Ramsey, State of Minnesota, and Minneapolis, county of Hennepin, State of Minnesota, respectively, have invented certain new and useful improvements in Grader Blades, of which the tollowing is a specification.

The object of our invention is to provide a grinder blade composed of aplurality of sections "mounted for adjustment on a horirental or vertical axis for the purpose of moving the bladesections forward or backward or up or down, as the grading work may require, j l

' ther objects of the invention will ap pear from tionv luthe accompanying drawings forming part of thisspecification,

Figure l is a rear view of a portion oi a grader blade, composed oi abutting sections, showing the means for adjusting them upon a vertical and a horizontal axis,

Figure 2 is a plan view of the same,

Figure 3 is a vertical sectional view through a sectionoi the blade and the ad justing means therefor, n

igure' 4i is a plan sectional view or a portion of adjacent blade sections, showing the lapping ends of the sections and the vertical axis thereior, Figure 5 is a detail sectional view of the vertical pivot on which the sectionsswing forwardly or backwardly,.

lli 'ure 6 is a detail sectional view of a modilied construction lln the drawin 2' and 3 represent adjoin ing sections 0r tie grader blade which may be composed-cl two sections jointed in the manner shown, or include several of such sections depending upon the size of the i machine and the character of the worlr where it is to be used. We have only shown one joint vwhich will be sufilcient to illustrate the principle involved and reserve the ri ht to use many of these joints as may e delln the preferred construction the adjoin in ends of the blade sections lap'by each at or as shown in Figure brand each sec-v,

tion is provided with a channel bar 4 in the rear thereof,- centrally secured to the he following detailed descripsection of the blade by suitable means, such as bolts 5. To the top of these channel bars brackets 6 are secured, havin threaded studs 8 and 9 which have a swivel oint 10 between them and are revolved in said brackets by means of a suitable handle 11 which is free to slide in the coupling between the studs.

When this handle is moved, the studs will be fed forward or backward to se arate the;

brackets 6 or draw them toget er, The studs are located as stated at the top of the scraper blade and evidently when the brackets are moved apart by the revolution of the studs the adjacent ends of the scraper sections will be tilted to raise the inner ends of the sections and depress the outer ends thereoi and thereby adapt the blades for melting a more pronounced slant or incline Specification of Letters Patent. Pate t d F b. 14 1922 tion in the grade of the road. When the handle 11 is revolved to draw-the brackets together, the inner ends of the sections will be depressed and the outer ends elevated the longitudinal edges of the sections may, if desired, bebrought into alignment so that the blade will be substantially straight from end to end. Tins ad ustinent will causethe scraper to form a substantially fiat surface in the soilover which it is moving.

it is also desirable a blade of this type to shift the sections forward or hack ward on a vertical axis and to accomplish this we provide angle iron brackets 12 on the lower flanged portion oi the channel bars upon which we mount blocks 13 having, threaded sockets for studs i l and 15 pro vi'ded'witli a swivel joint betweenlthem corresponding to the one described and also havin an operating handle 11' which, when moved back and forth, will impart a corresponding movement to the threaded studs. We also provide plates 16 horizontally ranged and secured to the underside oithe lid channel bars and havin a vertical pivot l? c which passes through t e lapping ed es of the late16 and through the lower of t e channel bars 41, so that when the studs 14 and 15 are revolved, the blade sec v tions will be moved forward or backward anges H on a'vertical axis for adjustment to the de sired angular relation. A rocker washer 18 is preferably provided on said vertical axis between the p1ates;l6 to provide sufilcient freedom of movement of the lates, one upon the other, to allow for ad ustmQnt 01 the blade sections on a horizontal axis without binding or cramp1ng..- This rocker washer,

however, is not a necessity, as we have found adjustment is permitted and one set of ad-.

usting studs will not in any way interfere with the other set,

In Figured we have shown a slightly modified construction in which the grader blade sections are placed end to end in abutting relation and a plate 19 is secured to one section in position to lap by the corresponding end of the other section, the adjustment of the sections one upon the other being effected in substantially the same manner as described with reference to the previous figures.

In various ways the details of construction herein shown and described may be modified and still be within the scope of our invention.

We claim as our invention:

1. A grader blade composed of a plurality of sections placed end to end and means having threaded connections with said sections for adjusting them on a horizontal transverse axis to relatively raise or lower the abutting ends of said sections. I j

2. A grader blade composed of a plurality of. sections placed end to end, adjusting studs mounted in said sections respectively in the rear of the abutting ends of said sections, the opposite studs having a swivel connection between them and means for revolving said studs to raise or lower the adj acent ends of said sections on a horizontal transverse axis, p

3. 'A grader blade composed of aplurality of sections placed end to end, adjusting means carried by said sections respectively in the rear of the abutting ends thereof and extending lengthwise of said sections for adjusting the sections on a horizontal transverse axis to raise or lower the abutting ends of said sections.

- 4. A grader blade comprising sections placed end to end, a pair of adjusting studs supported by said sections in the rear of their abutting ends and near the upper edges thereof for adjustment of said sections on a horizontal axis,---and similar ad'usti studs supported in the rear of said first named studs and near the bottom of said sections for adjustment thereof on a vertical axis.

5. A grader blade composed of a plurality of sections placed end to end, said sections GI having a vertical ivotal connection between theifabutting en s, said pivotal'connection allowing relative movement of said sections on a vertlcal and. a horlzontal axis, and means supported by said sections adjacent said plvotal connection for adjusting said sections vertically or horizontally.

6. A grader blade comprising sections placed end to end, brackets projectingfrom the abutting ends of said sections, studs hav- 76 ing swive ed connections between them bridging said abutting ends and having threaded connections w1th said brackets for tilting said sections verticall or horizontally, and guide plates for t e lower por- 80 tions of the'abutting ends of said sections.

7. A grader blade composed of a plurality of sections placed end to end, studs having their abutting ends swiveled together an bridging said abutting ends, and extending 86 lengthwise of said sections, means connecting said studs w1th said sections respectlvely for ad usting them on a horizontal and vertlcal axis.

8. A grader blade comprising sections 90 having their ends in abutting relation, brackets mounted on said abutting ends, studs having a swiveled connection between them and mounted in said brackets for longitudinal adjustment, movement of said studs lengthwise in said brackets operating to shift said sections on a horizontal or vertical axis, for the purpose specified.

9. A grader blade composed 'of sections placed end to end, brackets carried by said sections near their abutting ends, studs having threaded connections with said brackets and a swivel connection between them, revolution of said studs tilting said sections vertically to change the angle of the lower edges of said sections to the ground line.

10. A grader blade comprising sections placed end to end, plates carried by said sections and bridging the abutting ends thereof, one plate having a pivotal bearing upon the other plate and means in the rear of the pivotal bearing of said plates for shifting them -on a vertical axis to change the an le of the abutting ends of said sections.

11 witness whereof, we have hereunto set our hands this 31st day of October, 1917. 

